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Alpha-glycerophosphocholine is a choline-containing compound that naturally occurs in the brain and some foods.* In the brain, it functions as a precursor to acetylcholine, a neurotransmitter involved in memory, learning, and cognition.* In addition to choline, it also provides phospholipids to support cellular membrane health.* We use this brain-bioavailable form because it is more bioavailable than other forms of choline and can cross the blood-brain barrier to promote efficacy.*